Table 3.

Estimated 7-year relative excess mortality (RR) and 95% CI for women living in counties A, B, C, and D, adjusted for year of diagnosis, age at diagnosis, diagnostic activity, tumor characteristics, and treatments

RSRModel 1, RR (95% CI)Model 2, RR (95% CI)Model 3, RR (95% CI)Model 4, RR (95% CI)
County A73.11.00 (reference)1.00 (reference)1.00 (reference)1.00 (reference)
County B81.90.66 (0.43-1.01)0.60 (0.41-0.88)0.66 (0.45-0.96)0.71 (0.47-1.08)
County C82.00.71 (0.47-1.05)0.62 (0.44-0.89)0.65 (0.46-0.93)0.64 (0.44-0.93)
County D81.90.69 (0.48-1.01)0.66 (0.46-0.95)0.73 (0.51-1.05)0.73 (0.50-1.08)
  • NOTE: Model 1: adjusted for year, age, examined proliferation status, examined estrogen receptive status, and number of nodes examined (likelihood ratio test of the effect of county in the model: df = 3, χ2 = 5.44, P = 0.1425).

    Model 2: adjusted for year, age, number of positive nodes, and tumor size (likelihood ratio test of the effect of county in the model: df = 3, χ2 = 9.66, P = 0.0217).

    Model 3: adjusted for year, age, and screening (likelihood ratio test of the effect of county in the model: df = 3, χ2 = 7.25, P = 0.0642).

    Model 4: adjusted for year, age, treating clinic, surgery, radiotherapy, hormonal therapy, and chemotherapy (likelihood ratio test of the effect of county in the model: df = 3, χ2 = 5.99, P = 0.1123).

    Abbreviation: df, degree of freedom.